earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake … Universalium
Hughes–Drever experiment — Hughes–Drever experiments (also clock comparison , clock anisotropy , mass isotropy , or energy isotropy experiments) are testing the isotropy of mass and space. As in Michelson–Morley experiments, the existence of a preferred frame of reference … Wikipedia
Modern searches for Lorentz violation — Important motivations for modern searches for Lorentz violation are deviations from Lorentz invariance (and thus special relativity) predicted by some variations of quantum gravity, string theory, and some alternatives to general relativity.… … Wikipedia
Hughes-Drever-Experiment — Hughes Drever Experimente (auch Uhrenvergleichs , Uhrenanisotropie , Massenisotropie , oder Energieisotropie Experimente) werden zur Überprüfung der Isotropie der Masse bzw. des Raumes eingesetzt. Diese Experimente testen grundlegende Aussagen… … Deutsch Wikipedia
Moderne Tests der Lorentzinvarianz — dienen zur Überprüfung der grundlegenden Aussagen der speziellen Relativitätstheorie bzw. des Äquivalenzprinzips der allgemeinen Relativitätstheorie. Eine wesentliche Motivation dieser Experimente sind mögliche Verletzungen der Lorentzinvarianz,… … Deutsch Wikipedia
Clock of the Long Now — The first prototype, on display at the Science Museum in London. The Clock of the Long Now, also called the 10,000 year clock, is a proposed mechanical clock designed to keep time for 10,000 years. The project to build it is part of the Long Now… … Wikipedia
gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling … Universalium
physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… … Universalium
Timeline of gravitational physics and relativity — Timeline of gravitational physics and general relativity* 800s Ja far Muhammad ibn Mūsā ibn Shākir hypothesizes that the heavenly bodies and celestial spheres are subject to the same laws of physics as Earth, unlike the ancients who believed that … Wikipedia
Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea … Wikipedia
History of Physics — History of Physics † Catholic Encyclopedia ► History of Physics The subject will be treated under the following heads: I. A Glance at Ancient Physics; II. Science and Early Christian Scholars; III. A Glance at Arabian Physics; IV.… … Catholic encyclopedia